> For the complete documentation index, see [llms.txt](https://docs.geoprismregistry.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.geoprismregistry.com/version/v2.0.0/configure/concepts/concept-classes.md).

# Concept Classes

See [Concepts](/version/v2.0.0/configure/concepts.md) for a definition of Concept and general overview.

A Concept Class defines the attribution structure for concepts contained within a Concept Set, including enumerations and taxonomies. This acts as a template that defines what information each Concept in a Concept Set has. Every Concept has a name, but a Concept Class could also add a definition, a code, or a source.

By itself, a Concept Class is not linked to any other data in the system. It must be assigned to a Concept Edge Type and Concept Set before that Concept Set can be used to classify a Geo-Object Type.

{% hint style="info" %}
Registry Administrators can manage the Concept Classes of their organization.
{% endhint %}

## Creating a Concept Class

1. Navigate to the **Concept Classes** page from the sidebar. The page has three sections, **Concept Classes**, **Concept Edge Types** and **Concept Sets**, which you choose at the top of the list. Make sure **Concept Classes** is selected.
2. Click **Add** under your organization.
3. Fill out the form:

   <figure><img src="https://3732932512-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9giVyCrmTxAs33YrSRbJ%2Fuploads%2FtxnORU9xxY6yMRrgqqOa%2Fimage.png?alt=media&amp;token=2071a164-5a5d-494f-b707-f2cd02df0bb6" alt=""><figcaption></figcaption></figure>

   | Field                  | Description                                                                                                                            | Required |
   | ---------------------- | -------------------------------------------------------------------------------------------------------------------------------------- | -------- |
   | Code                   | The unique identifier of the Concept Class. It can't be changed later.                                                                 | Required |
   | Label                  | The display label, with one field per installed locale. The default locale is required.                                                | Required |
   | Description (Abstract) | A description, with one field per installed locale.                                                                                    |          |
   | Organization           | The organization that manages the Concept Class. It's filled in with the organization you clicked **Add** under, and can't be changed. |          |
4. Click **Ok**. The new Concept Class opens.

## Adding attributes

Every Concept Class has default attributes, such as the code and name of each Concept. To store more information about each Concept, such as a definition or a source, add custom attributes:

1. Click the three-dot menu next to the Concept Class and select **Edit**.
2. In the **Attributes** section, click **+ Add**, fill out the **Add a new attribute** form and click **Submit**. The form is the same as for Business Types, including **Is change over time**. See [Managing attributes of a Business Type](/version/v2.0.0/configure/business-types/managing-attributes-of-a-business-type.md).

<figure><img src="https://3732932512-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9giVyCrmTxAs33YrSRbJ%2Fuploads%2FTGdC433naEaZ5IAd7zPE%2Fimage.png?alt=media&amp;token=0d53450d-0e2a-4e90-aa53-c864b1029c51" alt=""><figcaption></figcaption></figure>

## Other options

The three-dot menu next to a Concept Class also has:

* **View Data**, which opens a table of the Concepts in that class.
* **Import History**, which lists the imports into that class.
* **Delete**, which deletes the Concept Class after you confirm.

To load Concepts into a Concept Class, see [Import Business Data](/version/v2.0.0/curate/import-business-data.md).